Interesting. For us it’s like one particular area with one particular mode of 
AP we don’t have anyplace else.  It magically went away again today too. 

Nick 

Sent from my iPhone

> On Jun 26, 2020, at 5:12 PM, Paul Smith <psmi...@marian.edu> wrote:
> 
> *EXTERNAL EMAIL*
> 
> Q. Are you by any chance running WPA2 + WPA3 Enterprise with both the WPA2 
> and WPA3 boxes checked?  We are currently on 8.10.121 and seeing this issue 
> as well primarily with Windows devices.  I have not seen any issues with Macs 
> and authentication.
> 
> A. No. WPA2 + WPA3, but only WPA2 is checked. I will experiment with this 
> when I get back to the office. The big problem is it's impacting Windows 10 
> PCs. We have not seen the issue with iPhones or Android devices, but there 
> may not be enough of them on campus right now to say for sure (we don't have 
> a summer semester). We do have Mac's having a similar issue, but forgetting 
> the SSID and re-selecting fixes any auth issues we see there.
> 
> Q. FYI:   I noticed that  "over-the-ds" setting changed when we upgraded from 
> 8.5 to 8.10.121.0.  There may be other settings that changed as well.
> 
> A. One of the engineers mentioned another setting was different (sorry, can't 
> remember which it was), but then he called me right back and said that wasn't 
> the issue. I believe there was something he found in the logs based on the 
> conversation, so hopefully we'll have more info soon. It might've been beacon 
> related, but I could have that planted in my head from an earlier post.
> 
> Q. There was a memory leak in the AP. Clients were not moving from 
> authentication to the AP through the association phase on the 
> controller.(these terms seem backwards to me backwards -- authentication is 
> finding the AP, association is the 802.1x/radius part). The AP was not 
> forwarding the association PDU to the controller (so the radius servers never 
> got to see request let alone send a rejection). Rebooting the AP at the time 
> /might/ fix the problem, but if a large number of clients immediately 
> connected to the newly rebooted AP it ran out memory and became 
> semi-operational again. I'd check the AP rather than the controller logs to 
> see what it's reporting.
> 
> A. There's not an AP model on the campus that we've found the behavior any 
> different. In our office where we test, it's a 2802 ... but the issue exists 
> with the 3800's and even the new 9100's as well.
> 
> Q. Have you tested your Android devices with FT disabled? (instead of FT 
> Adaptive). I would be curious to hear what results you get.
> 
> A. We haven't seen any issues with Android devices (yet), but we don't have 
> enough on the campus to say for sure. We did go Adaptive at the suggestion of 
> Cisco and a Presidio engineer because of some issues with iPads. So, I 
> wouldn't be keen to change that.
> 
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